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3M143A4-2 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3M143A4-2: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: PLATE, nut_height: 0.344 INCHES MAXIMUM IN, nut_length: 1.296 INCHES NOMINAL IN, lubrication: DRY FILM LUBRICANT, plate_width: 0.516 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-133-0433, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3M143A4-2
NSN: 5310-01-133-0433
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_stylePLATE
nut_height0.344 INCHES MAXIMUM IN
nut_length1.296 INCHES NOMINAL IN
lubricationDRY FILM LUBRICANT
plate_width0.516 INCHES NOMINAL IN
temp_rating450.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.040 INCHES NOMINAL IN
thread_directionRIGHT-HAND
NSN5310-01-133-0433
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3M143A4-2 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LUBRICATION: DRY FILM LUBRICANT
•
PLATE THICKNESS: 0.040 INCHES NOMINAL IN
•
NUT LENGTH: 1.296 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
PLATE WIDTH: 0.516 INCHES NOMINAL IN
•
TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
•
MOUNTING HOLE DIAMETER: 0.098 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
PLATE THICKNESS0.040 INCHES NOMINAL IN
NUT LENGTH1.296 INCHES NOMINAL IN
THREAD SERIESUNF
PLATE WIDTH0.516 INCHES NOMINAL IN
TEMP RATING450.0 FAHRENHEIT MAXIMUM DEGF
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
MOUNTING HOLE DIAMETER0.098 INCHES NOMINAL IN
NUT COUNTERBORE DEPTH0.125 INCHES NOMINAL MOUNTING IN
FEATURES PROVIDEDFLOATING NUT
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3M143A4-2?
3M143A4-2 is a NUT,SELF-LOCKING,PLATE.
What is the NSN for 3M143A4-2?
3M143A4-2 is cataloged in the U.S. Government catalog under NSN 5310-01-133-0433. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.